Factor.25x2 + 60xy + 36y2
A. (5x + 6y)2
B. (5x - 6y)2
C. Prime
D. (5x + 6y)(5x - 6y)
Answer: A
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Solve the problem.The graph shows the hours studied and the exam grades obtained on a finite math exam for 8 students. (The two points on the line do not represent any of the eight students.) The line of best fit, the line graphed on the coordinate system, can be used to approximate the test grade the average student receives for the number of hours they study. 
Find the equation of the line of best fit. Then use the equation to estimate the number of hours studied by a student who received a grade of 78 . Round to two decimal places.
A. 4.71 hr B. 4.24 hr C. 2.23 hr D. 3.21 hr
Solve the problem.In the following formula, f(x) is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 96?
A. 21.45 hr B. 99.96 hr C. 11.09 hr D. 110.90 hr
Find the indicated limit.
A. The limit does not exist.
B. 
C. 0
D. 